BlueALSA bluealsad LC3plus Decoder Division-by-Zero DoS
BlueALSA (bluez-alsa/bluealsad) contains a division-by-zero vulnerability in the LC3plus sink decoder (a2dp-lc3plus.c, a2dp_lc3plus_dec_thread) that allows a Bluetooth-adjacent attacker to crash the daemon by sending a crafted RTP media header with an attacker-controlled frame count field set to zero. Attackers can establish an A2DP source connection with an LC3plus session negotiated against a victim running bluealsad as an A2DP sink and transmit a non-fragmented LC3plus media header with a zero frame count to trigger a SIGFPE in the decoding thread, causing a denial of service on builds compiled with LC3plus support enabled.
CVE-2026-101887
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-101887
bluez-alsa
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/arkq/bluez-alsa",
"vendor": "arkq",
"product": "bluez-alsa",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1a84465dd860d1be9dcf62339c6273e9e0632dd2",
"versionType": "git"
}
],
"packageURL": "pkg:github/arkq/bluez-alsa",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-101887
Source reference:
/cveMetadata/cveId
Publisher severity
low
Source reference: /containers/cna/metrics
- Event
- #7653 · Revision 1
- Added to Heist Feed
- Publisher date